Bathtub



FIG. 1 is a top plan view of a bathtub showing my new design;

FIG. 2 is a perspective view taken from the top, front and right end thereof;

FIG. 3 is another perspective view taken from the top and right end thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left end elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right end elevational view thereof;

FIG. 8 is a front elevational view of a modified form of the bathtub shown in FIG. 1;

FIG. 9 is a left end elevational view of FIG. 8; and

FIG. 10 is a right end elevational view of FIG. 8. 

The ornamental design for a bathtub, as shown and described. 